Welding method and welding apparatus

JP2026093609APending Publication Date: 2026-06-09TOYOTA JIDOSHA KK
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
TOYOTA JIDOSHA KK
Filing Date
2024-11-28
Publication Date
2026-06-09

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Benefits of technology

【0008】 本開示によれば、鋳物をレーザ溶接するに際し、内部にガスが内包されることによるブローホールの発生を抑制することが可能な溶接方法及び溶接装置を提供できる。

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Abstract

The present invention provides a welding method and welding apparatus that can suppress the occurrence of blowholes caused by gas being trapped inside during laser welding of castings. [Solution] The welding method according to this disclosure is a welding method for welding a casting 20 with a laser. In this welding method, a first laser irradiation is performed on the casting 20, and then a second laser irradiation is performed on the casting 20 using the same path as the first laser irradiation.
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Claims

1. A welding method that uses a laser to weld castings, After performing a first laser irradiation on the casting, a second laser irradiation is performed on the casting using the same path as the first laser irradiation. Welding method.

2. The output of the second laser irradiation is made smaller than the output of the first laser irradiation. The welding method according to claim 1.

3. A welding apparatus for welding castings with a laser, The laser irradiator is provided with a first laser irradiation of the casting, followed by a second laser irradiation of the casting using the same path as the first laser irradiation. Welding equipment.

4. The output of the second laser irradiation is made smaller than the output of the first laser irradiation. The welding apparatus according to claim 3.

5. The laser irradiator comprises a first laser irradiation unit that performs the first laser irradiation and a second laser irradiation unit that performs the second laser irradiation. The welding apparatus according to claim 3 or 4.